Sludge and doom, especially the more melodic/complex bands in those genres (Mouth of the Architect, Ea, Skepticism, Funeral, etc). Also drone (Sunn O))), Earth).
EDIT: Oftentimes djent will tickly my fancy (Atlanticore, Vildhjarta, etc) if I want something a bit faster.
Post-metal (Isis (fuck yeah isis), some of Neurosis's stuff like "The Eye of Every Storm", Rosetta, etc), definitely.
Shoegaze (namely Alcest and Chuter, if Chuter is considered "metal").
Industrial. The darker the better--P.H.O.B.O.S. blows my mind like nothing else.
Also Aria. They're like Iron Maiden but Russian, and in my opinion, many times better.
And Mushroomhead. Not sure what genre they technically are, but I fucking love their album XIII.
EDIT: Oftentimes djent will tickly my fancy (Atlanticore, Vildhjarta, etc) if I want something a bit faster.
Post-metal (Isis (fuck yeah isis), some of Neurosis's stuff like "The Eye of Every Storm", Rosetta, etc), definitely.
Shoegaze (namely Alcest and Chuter, if Chuter is considered "metal").
Industrial. The darker the better--P.H.O.B.O.S. blows my mind like nothing else.
Also Aria. They're like Iron Maiden but Russian, and in my opinion, many times better.
And Mushroomhead. Not sure what genre they technically are, but I fucking love their album XIII.